File: file-server/fileServer.js

var sys = require("sys"),
    http = require("http"),
    url = require("url"),
    path = require("path"),
    fs = require("fs");

http.createServer(function(request, response) {
  var uri = url.parse(request.url).pathname;
  var filename = path.join(process.cwd(), uri);
  
  fs.exists(filename, function(exists) {
    if(!exists) {
      response.writeHead(404, {"Content-Type": "text/plain"});
      response.end("404 Not Found");
      return;
    }

    fs.readFile(filename, "binary", function(err, file) {
      if(err) {
        response.writeHead(500, {"Content-Type": "text/plain"});
        response.end(err + "n");
        return;
      }

      response.writeHead(200);
      response.end(file, "binary");
    });
  });
}).listen(8080);

console.log("Server running at http://localhost:8080/");